kuersten



(No Model.) 2 Sheets-Sheet 1.

H. R. KUERSTEN.

FILTER.

Patented June 21, 1898.

W v Q I a a 51 j? I J A l i ww 7 7 i 1 I Maw if 1 MMfi 2 Sheets-Sheet 2.

(No Model.)

H. R. KUERSTEN.

FILTER Patented June 21,1898.

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NITE

IIUGO R. KUERSTEN,

FILTER.

SPECIFICATION forming part'of Letters Patent No. 605,883, dated June 21, 1898- Application filed November 29,1897. Serial No. 660,093. (No man.)

To aZZ whom it may concern:

Be it known that I, Hueo R. KUERSTEN, a citizen of the United States, residing at Chicago,in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Filters; and I do hereby declare the following to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel construction in a filter, the object being to provide a device of this character of large capacity, compactness, and which can be thoroughly cleaned without being taken apart; and it consists in the features of construction and combinations of parts hereinafter fully described.

In the accompanying drawings, illustrating my invention, Figure .1 is a top plan view of a filterconstructed in accordance with my invention with the cover or upper portion of the casing removed. Fig. 2 is a verticallongitudinal section of the same on the line 2 2 of Fig. 1, also with the cover removed. Fig. 3 is a vertical transverse section on the line 3 3 of Fig. 2, showing the cover in place. Fig. 4: is a detail sectional view of a valve on the cover. Fig. 5 is a detail view in elevation of an arm adapted to be mounted upon a shaft in said filter and to carry brushes or scrapers for cleaning the filter-tubes. Figs. 6 and 7 are detail fragmentary sectional views illustrating the manner in which the filter-tubes are made.

Referring now to said drawings, A indicates a practically cylindrical casing consisting of two sections 1 and 2, which are adapted to be secured together by means of screws passing through the flanges 3 thereof, a rubber packing being interposed between said flanges to effect a water tight joint. Said portion 1 of said casing A is provided with valve-controlled inlet and outlet ports 4 and 5, respectively, and with a series of openings 6 between the same, through which the nipples 7 of metallic rings 8 surrounding the earthenware filter-tubes 9 are adapted to pass. Said nipples 7 are coupled by means of unions 10, of ordinary construction, with the branches 11 of a common receiving-pipe 12, adapted to receive the filtered water, rubber washers being interposed in said connections to make watertight joints. said nipples 7 and are compressed between.

Rubberwashers 13 surround said rings 8 and said casing by means of said unions 10 in an obvious manner, thus preventing said casing from leaking at said openings 6. Said filter-tubes 9 are made in the form of flat cylindrical disks having central openings and are provided interiorly with annular passages '14, which are connected together by means of radial passages 15 and have a common outlet through said nipples 7 of said metallic rings 8, in which said tubes are rigidly mounted. Each of said tubes is composed of two sections of cylindrical form, provided with annular and radial grooves, which when said sections are joined form said passages 14 and 15, respectively. Said sections are further provided with annular grooves 16 between, outside, and within said grooves above referredto, which prior to the burning of said tubes in the kiln are filled with wet clay, which serves to cement same together, as shown in detail in Figs. 6 and 7,

so as to appear to have been formed of one-- piece in the finished tube. The tube when finished is laid within and firmly cemented to said ring 8 in such a manner as to bring its outlet into alinement with the opening in said nipple 7 for obvious reasons. Said rings 8 obviously serve to strengthensaid tubes and also to afford a means for. securing and supporting them in said casing. To hold said rings 8 in said casin g so that they stand transversely therein and to hold them parallel, I

provide pairs of lugs 17 on said casing at regular intervals, between which lugs 18 on said rings 8 are adapted to fit, thus obviously preventing said rings 8 from turning when coupling same to said outlet-pipes 11.

All filters after they have been in operation for some time become clogged as thefine sediment contained in the water enters and fills the pores of the porous filtering material and thus gradually decrease in capacity. This necessitates taking the filters apart very frequently and thoroughly cleaning the tubes, thus requiring time and labor. In constructing my filter I have kept in mind all the objections to be overcome and have thus aimed ICO to attain all the advantages desirednamely, compactness, a large surface of porous material, simplicity and clieapness of construction, durability, and easy and simple means for cleaning the tubes or porous material without removing same from the casing and while the filteris in operation.

By means of the form of my tubes I obviously attain the large surface of porous material without making a bulky tube, and by means of the remaining features above .described I attain simplicity, durability, and cheapness of construction. I also provide simple and efficient means for keeping said tubes constantly clean without removingsame from the casing or interrupting the operation of the filter.

ing A practically in the center thereof and through said central openings in said tubes. This shaft is j ournaled in a bearingor cup 20 in one end of said casing and passes through the other end thereof, a stuffing-box 21 being provided at said last-named end to form a tight joint. tubes and between the latter and said casing, a series of sleeves 22 are rigidly secured,which carry radially outwardly extending; arms 23 at their opposite ends, which extend in opposite directions. Said arms 23 are provided with bushings 24 and 25, which are centrally perforated and adapted to receive the pins 26 and 27 of socket-pieces 28, in which pieces 29 of said porous material of which said filter tubes are provided are mounted and which collects on said tubes. scrapers 29 are held in close contact with said tubes by means of springs 30 interposed between said arms 23 and said socket-pieces 28 in an obvious manner. Said arms 23 are preferably so arranged relatively to each other as to bring said scrapers 29v in direct alinement with each other on opposite sides of each tube, so as to avoid any torsional pressure thereon. Said shaft 19 isturned by means of a crank-handle 31, and by giving same a few turns at intervals it will be obvious that said tubes can bekept clean and the capacity of the filter remain unimpaired. During the time that said crank-handle is being turned it would be advisable to open the outlet-port of said casing, so as to lead the sediment thus removed from the tubes into the waste-pipe. I also supply suitable means for enabling me to empty said casing when said filter is not in use, and to this end provide a ball-valve 32 on the upper end of the casing, which will admit and permit the outflow of air from said casing, so that when the latter is being filled it will allow free exit of air, but as soon as the water-level reaches the ball the latter will be raised, thus closing said To this end I provide a shaft 19, running longitudinally through said cas-' On said shaft 19, between said 1 flat cylindrical disks of clay each provided on one of its flat faces with annular and radial grooves which when said disks are fitted together to form a tube, form annular and radial passages therein, substantially as described. 2. In a filter, a filter-tube composed of two fiat cylindrical disks of clay each provided in one of its fiat faces with wide annular grooves bordered by narrow grooves adapted to receive material to cement said disks together to form said tube, said wide annular grooves forming annular passages in said finished tube, and radial passages connecting said annular passages and forming an outlet from said tube, substantially as described.

In a filter, a filter-tube comprisingaflat j cylindrical disk having internal annular pasj sages and radial passages connecting said annular passages and forming an outlet from said tube, a metal ring or band around said tube, and a, nipple on said band having an opening adapted to communicate with the 1 outlet of said tube,substantially as described. 4. In a filter, a filter-tube comprising a flat cylindrical disk havinginternal annular passages and radial passages connecting said an nular passages and forming an outlet from F said tube, a metal ring or band around said 1 tube, an exteriorly-screw-threaded nipple on said band communicating with said outlet of said tube, a casing adapted to contain said tube and having an opening through which said nipple is adapted to pass and means for j securing said tube firmly within said casin g, which serve as brushes to scrape the sediment Said brushes or 1 substantially as described.

, 5. In a filter, a filter-tube comprising a flat cylindrical disk havinginternal annular passages, and radial passages connecting said annular passages and forming an outlet from i said tube, a metal ring or band around said tube, an exteriorly-screw-threaded nipple on said, band communicating with said outlet of I said tube, a casing adapted to contain said 3 tube and having an opening through which said nipple is adapted to pass and means for securing said tube firmly within said casing comprising a union adapted to couple said nipple with an outlet-pipe and clamp said ring or band firmly against said casing around said opening, substantially as described. 6. In a filter, a casing, a filter-tube within said casing comprising a hollow flat cylindrical disk having a central opening therethrough and a peripheral outlet, a ring or 1 band around said tube having an outwardlyextending nipple provided with an opening communicating with 'said peripheral outlet, an opening in said casing through which said nipple is adapted to pass, means for coupling i said nipple with an outlet-pipe and serving to firmly secure said tube within said casing, ,valve-controlled inlet and outlet pipes for f said casing, and an exhaust-valve on said casing adapted to permit the exit of air therej from, substantially as described.

7. In a filter, a casing, a filter-tube within said casing comprising a hollow flat cylindrical disk having a central opening therethrough and a peripheral outlet, a ring or band around said tube having an outwardlyeXtending nipple provided with an opening communicating with said peripheral outlet, an opening in saidcasing through which said nipple is adapted to pass, means for coupling said nipple with an outlet-pipe and serving -to firmly secure said tube within said casing,

a shaft passing centrally through said casing and through said central opening in said tube, and devices carried by said shaft adapted to remove sediment from the outer faces of said tube when said shaft is revolved, substantially as described.

8. In a filter, the combination with a plurality of parallel filter-tubes comprising hollow fiat cylindrical disks having central openings and firmly mounted within a casing, of a shaft passing longitudinally through said casing and through said central openings in said tubes and carrying devices adapted to scrape the outer faces of said tubes to clean the same when said shaft is revolved, substantially as described.

9. In a filter, the combination with a plurality of parallel filter-tubes comprising hollow fiat cylindrical disks having central openings and firmly mounted within a casing, of a shaft passing longitudinally through said casing and through said central openings in said tubes and carrying arms extending outwardly between said tubes, and devices carried by said arms and bearing against said tubes to clean the same when said shaft is revolved, substantially as described.

' said tubes and carrying arms extending outwardly between said tubes, and movable spring-actuated scrapers carried by said arms and bearing against said tubes to clean the same when said shaft is revolved, substantially as described.

11. In a filter, a casing made in two parts, a plurality of filter-tubes mounted within said casing and consisting of hollow flat cylindrical disks surrounded by peripheral bands having nipples communicating with the outlets of said tubes and passing through openings in said casing, means for coupling said nipples with branches of an outlet-pipe for filtered water, central openings in said-tubes, a crank-shaft passing through said casing and through said central openings in said tubes, arms on said shaft, scrapers carried by said I arms and bearing against said tubes to clean the same when said shaft is revolved, valvecontrolled inlet and waste pipes for said casing, and an air-outlet valve on said casing 65 adapted to be closed automatically by the rise of water in said casing, substantially as described. v

In testimony whereof I affix my signature in presence of two witnesses.

HUGO R. KUERSTEN. Witnesses:

RUDOLPH WM. Lo'rz, ERWIN J. Low. 

